class Mychart {
    constructor() {

    }
    static addchartDiv(id) {
        var chartdiv = document.createElement('div');
        chartdiv.className = "chartdiv";
        chartdiv.id = id;
        document.querySelector('.charst_content').appendChild(chartdiv);
    }
    static removeAllChart() {
        removeAllEntities()
    }
}